Simple Machines Flashcards

1
Q

The number of times a machine multiplies the input force; output force divided by input force.

A

Mechanical advantage

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2
Q

The percentage of the input work done on a machine that the machine can return in output work. A machine’s output work divided by its input work and multiplied by 100.

A

Efficiency

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3
Q

One of the basic machines on which all other mechanical machines are based. The six simple machines are the lever, inclined plane, wheel and axle, pulley, wedge, and screw.

A

Simple machine

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4
Q

A solid bar that rotates, or turns, around a fixed point ( fulcrum ); one of the six simple machines.

A

Lever

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5
Q

A fixed point around which a lever rotates.

A

Fulcrum

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6
Q

A simple machine that is a wheel attached to a shaft, or axle.

A

Wheel and axle

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7
Q

A wheel with a grooved rim that turns on an axle; one of the six simple machines.

A

Pulley

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8
Q

A simple machine that is a sloping surface, such as a ramp.

A

Inclined plane

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9
Q

A simple machine that has a thick end and a thick end. A wedge is used to cur, split, or pierce objects, or to hold objects together.

A

Wedge

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10
Q

A simple machine that is an inclined plane wrapped around a cylinder. A screw can be used to raise and lower weights as well as to fasten objects.

A

Screw

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11
Q

Any device that makes doing work easier.

A

Machine

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